/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-78.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:08:01,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:08:01,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 13:08:01,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:08:01,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:08:01,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:08:01,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:08:01,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:08:01,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:08:01,169 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:08:01,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:08:01,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:08:01,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:08:01,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:08:01,171 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:08:01,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:08:01,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:08:01,172 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:08:01,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:08:01,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:08:01,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:08:01,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:08:01,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:08:01,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:08:01,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:08:01,173 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:08:01,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:08:01,173 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:08:01,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:08:01,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:08:01,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:08:01,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:08:01,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:08:01,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:08:01,175 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:08:01,175 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:08:01,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:08:01,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:08:01,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:08:01,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:08:01,176 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:08:01,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:08:01,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:08:01,176 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:08:01,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:08:01,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:08:01,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:08:01,362 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:08:01,362 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:08:01,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-78.i [2023-12-19 13:08:02,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:08:02,556 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:08:02,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-78.i [2023-12-19 13:08:02,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea5bae17/08fec219f96d44ebae30012c482277ab/FLAG62ed60c21 [2023-12-19 13:08:02,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea5bae17/08fec219f96d44ebae30012c482277ab [2023-12-19 13:08:02,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:08:02,927 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:08:02,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:08:02,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:08:02,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:08:02,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:08:02" (1/1) ... [2023-12-19 13:08:02,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ffaed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:02, skipping insertion in model container [2023-12-19 13:08:02,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:08:02" (1/1) ... [2023-12-19 13:08:02,976 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:08:03,063 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-78.i[916,929] [2023-12-19 13:08:03,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:08:03,193 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:08:03,201 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-78.i[916,929] [2023-12-19 13:08:03,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:08:03,291 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:08:03,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03 WrapperNode [2023-12-19 13:08:03,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:08:03,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:08:03,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:08:03,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:08:03,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,365 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 483 [2023-12-19 13:08:03,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:08:03,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:08:03,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:08:03,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:08:03,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,461 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 13:08:03,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:08:03,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:08:03,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:08:03,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:08:03,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (1/1) ... [2023-12-19 13:08:03,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:08:03,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:03,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 13:08:03,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 13:08:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:08:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:08:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:08:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:08:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:08:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:08:03,711 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:08:03,714 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:08:04,356 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:08:04,391 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:08:04,391 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:08:04,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:08:04 BoogieIcfgContainer [2023-12-19 13:08:04,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:08:04,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:08:04,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:08:04,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:08:04,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:08:02" (1/3) ... [2023-12-19 13:08:04,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a001434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:08:04, skipping insertion in model container [2023-12-19 13:08:04,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:08:03" (2/3) ... [2023-12-19 13:08:04,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a001434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:08:04, skipping insertion in model container [2023-12-19 13:08:04,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:08:04" (3/3) ... [2023-12-19 13:08:04,398 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-78.i [2023-12-19 13:08:04,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:08:04,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:08:04,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:08:04,454 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@723100d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:08:04,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:08:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 129 states have (on average 1.573643410852713) internal successors, (203), 130 states have internal predecessors, (203), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-19 13:08:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-19 13:08:04,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:04,480 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:04,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:04,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1301773186, now seen corresponding path program 1 times [2023-12-19 13:08:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:04,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997919807] [2023-12-19 13:08:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:04,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:04,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:04,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997919807] [2023-12-19 13:08:04,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 13:08:04,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720440561] [2023-12-19 13:08:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:04,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:04,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:04,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:04,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 13:08:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:05,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:08:05,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2023-12-19 13:08:05,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:08:05,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720440561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:08:05,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:08:05,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:08:05,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316443338] [2023-12-19 13:08:05,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:08:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:08:05,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:05,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:08:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:08:05,122 INFO L87 Difference]: Start difference. First operand has 188 states, 129 states have (on average 1.573643410852713) internal successors, (203), 130 states have internal predecessors, (203), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-19 13:08:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:05,182 INFO L93 Difference]: Finished difference Result 373 states and 684 transitions. [2023-12-19 13:08:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:08:05,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) Word has length 361 [2023-12-19 13:08:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:05,192 INFO L225 Difference]: With dead ends: 373 [2023-12-19 13:08:05,192 INFO L226 Difference]: Without dead ends: 186 [2023-12-19 13:08:05,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:08:05,200 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:05,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:08:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-19 13:08:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-19 13:08:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 128 states have (on average 1.546875) internal successors, (198), 128 states have internal predecessors, (198), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-19 13:08:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 310 transitions. [2023-12-19 13:08:05,278 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 310 transitions. Word has length 361 [2023-12-19 13:08:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:05,278 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 310 transitions. [2023-12-19 13:08:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-19 13:08:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 310 transitions. [2023-12-19 13:08:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-19 13:08:05,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:05,291 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:05,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:05,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 13:08:05,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:05,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1165348862, now seen corresponding path program 1 times [2023-12-19 13:08:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:05,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603848043] [2023-12-19 13:08:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:05,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:05,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:05,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732692940] [2023-12-19 13:08:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:05,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:05,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:05,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:05,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 13:08:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:05,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:08:05,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:08:05,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:08:05,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:05,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603848043] [2023-12-19 13:08:05,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:05,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732692940] [2023-12-19 13:08:05,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732692940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:08:05,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:08:05,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:08:05,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004497013] [2023-12-19 13:08:05,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:08:05,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:08:05,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:08:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:08:05,887 INFO L87 Difference]: Start difference. First operand 186 states and 310 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:08:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:05,990 INFO L93 Difference]: Finished difference Result 553 states and 922 transitions. [2023-12-19 13:08:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:08:05,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 361 [2023-12-19 13:08:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:05,997 INFO L225 Difference]: With dead ends: 553 [2023-12-19 13:08:05,997 INFO L226 Difference]: Without dead ends: 368 [2023-12-19 13:08:05,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:08:05,999 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 285 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:05,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 617 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:08:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-19 13:08:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 364. [2023-12-19 13:08:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 249 states have (on average 1.502008032128514) internal successors, (374), 249 states have internal predecessors, (374), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:08:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 598 transitions. [2023-12-19 13:08:06,053 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 598 transitions. Word has length 361 [2023-12-19 13:08:06,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:06,056 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 598 transitions. [2023-12-19 13:08:06,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:08:06,056 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 598 transitions. [2023-12-19 13:08:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-19 13:08:06,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:06,058 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:06,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:06,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 13:08:06,264 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:06,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1140274746, now seen corresponding path program 1 times [2023-12-19 13:08:06,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:06,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594445898] [2023-12-19 13:08:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:06,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:06,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102672298] [2023-12-19 13:08:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:06,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:06,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:06,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:06,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 13:08:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:06,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:08:06,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:08:06,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:08:06,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:06,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594445898] [2023-12-19 13:08:06,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:06,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102672298] [2023-12-19 13:08:06,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102672298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:08:06,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:08:06,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:08:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784590253] [2023-12-19 13:08:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:08:06,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:08:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:08:06,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:08:06,609 INFO L87 Difference]: Start difference. First operand 364 states and 598 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:08:06,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:06,696 INFO L93 Difference]: Finished difference Result 737 states and 1211 transitions. [2023-12-19 13:08:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:08:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 362 [2023-12-19 13:08:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:06,701 INFO L225 Difference]: With dead ends: 737 [2023-12-19 13:08:06,701 INFO L226 Difference]: Without dead ends: 374 [2023-12-19 13:08:06,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:08:06,704 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 271 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:06,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 743 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:08:06,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-19 13:08:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 370. [2023-12-19 13:08:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 255 states have (on average 1.4784313725490197) internal successors, (377), 255 states have internal predecessors, (377), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:08:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 601 transitions. [2023-12-19 13:08:06,728 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 601 transitions. Word has length 362 [2023-12-19 13:08:06,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:06,728 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 601 transitions. [2023-12-19 13:08:06,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:08:06,729 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 601 transitions. [2023-12-19 13:08:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-19 13:08:06,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:06,731 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:06,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 13:08:06,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:06,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:06,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash -548668996, now seen corresponding path program 1 times [2023-12-19 13:08:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430346345] [2023-12-19 13:08:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:07,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:07,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17092807] [2023-12-19 13:08:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:07,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:07,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:07,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 13:08:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:07,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:08:07,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 1329 proven. 18 refuted. 0 times theorem prover too weak. 4813 trivial. 0 not checked. [2023-12-19 13:08:07,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:08:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 147 proven. 18 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-12-19 13:08:07,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430346345] [2023-12-19 13:08:07,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17092807] [2023-12-19 13:08:07,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17092807] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:08:07,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:08:07,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:08:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018809868] [2023-12-19 13:08:07,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:08:07,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:08:07,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:08:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:08:07,467 INFO L87 Difference]: Start difference. First operand 370 states and 601 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-19 13:08:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:07,793 INFO L93 Difference]: Finished difference Result 753 states and 1213 transitions. [2023-12-19 13:08:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:08:07,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 362 [2023-12-19 13:08:07,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:07,801 INFO L225 Difference]: With dead ends: 753 [2023-12-19 13:08:07,801 INFO L226 Difference]: Without dead ends: 384 [2023-12-19 13:08:07,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 716 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:08:07,803 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 385 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:07,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 600 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:08:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-19 13:08:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 376. [2023-12-19 13:08:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 259 states have (on average 1.4555984555984556) internal successors, (377), 259 states have internal predecessors, (377), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 13:08:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 601 transitions. [2023-12-19 13:08:07,837 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 601 transitions. Word has length 362 [2023-12-19 13:08:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:07,838 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 601 transitions. [2023-12-19 13:08:07,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-19 13:08:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 601 transitions. [2023-12-19 13:08:07,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-19 13:08:07,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:07,841 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:07,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:08,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:08,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:08,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:08,049 INFO L85 PathProgramCache]: Analyzing trace with hash -128314313, now seen corresponding path program 1 times [2023-12-19 13:08:08,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:08,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638081873] [2023-12-19 13:08:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:08,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:08,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:08,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575847592] [2023-12-19 13:08:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:08,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:08,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:08,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:08,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 13:08:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:08,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 13:08:08,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:08:08,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:08:08,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:08,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638081873] [2023-12-19 13:08:08,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:08,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575847592] [2023-12-19 13:08:08,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575847592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:08:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:08:08,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:08:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360640400] [2023-12-19 13:08:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:08:08,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:08:08,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:08,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:08:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:08:08,411 INFO L87 Difference]: Start difference. First operand 376 states and 601 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:08:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:09,331 INFO L93 Difference]: Finished difference Result 2280 states and 3626 transitions. [2023-12-19 13:08:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 13:08:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 363 [2023-12-19 13:08:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:09,339 INFO L225 Difference]: With dead ends: 2280 [2023-12-19 13:08:09,339 INFO L226 Difference]: Without dead ends: 1905 [2023-12-19 13:08:09,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:08:09,340 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1670 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:09,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 1318 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 13:08:09,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2023-12-19 13:08:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1762. [2023-12-19 13:08:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1206 states have (on average 1.4361525704809286) internal successors, (1732), 1213 states have internal predecessors, (1732), 536 states have call successors, (536), 19 states have call predecessors, (536), 19 states have return successors, (536), 529 states have call predecessors, (536), 536 states have call successors, (536) [2023-12-19 13:08:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2804 transitions. [2023-12-19 13:08:09,485 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2804 transitions. Word has length 363 [2023-12-19 13:08:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:09,485 INFO L495 AbstractCegarLoop]: Abstraction has 1762 states and 2804 transitions. [2023-12-19 13:08:09,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:08:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2804 transitions. [2023-12-19 13:08:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-19 13:08:09,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:09,488 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:09,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:09,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:09,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:09,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1951473805, now seen corresponding path program 1 times [2023-12-19 13:08:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132528799] [2023-12-19 13:08:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:09,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:09,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:09,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566133160] [2023-12-19 13:08:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:09,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:09,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:09,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:09,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 13:08:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:09,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 13:08:10,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:08:10,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:08:10,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132528799] [2023-12-19 13:08:10,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566133160] [2023-12-19 13:08:10,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566133160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:08:10,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:08:10,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:08:10,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909051571] [2023-12-19 13:08:10,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:08:10,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:08:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:10,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:08:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:08:10,290 INFO L87 Difference]: Start difference. First operand 1762 states and 2804 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:08:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:10,448 INFO L93 Difference]: Finished difference Result 4422 states and 7039 transitions. [2023-12-19 13:08:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:08:10,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 364 [2023-12-19 13:08:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:10,459 INFO L225 Difference]: With dead ends: 4422 [2023-12-19 13:08:10,459 INFO L226 Difference]: Without dead ends: 2761 [2023-12-19 13:08:10,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:08:10,463 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 119 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:10,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 603 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:08:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2023-12-19 13:08:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2759. [2023-12-19 13:08:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 1905 states have (on average 1.4320209973753282) internal successors, (2728), 1916 states have internal predecessors, (2728), 824 states have call successors, (824), 29 states have call predecessors, (824), 29 states have return successors, (824), 813 states have call predecessors, (824), 824 states have call successors, (824) [2023-12-19 13:08:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4376 transitions. [2023-12-19 13:08:10,615 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4376 transitions. Word has length 364 [2023-12-19 13:08:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:10,616 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 4376 transitions. [2023-12-19 13:08:10,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:08:10,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4376 transitions. [2023-12-19 13:08:10,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-19 13:08:10,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:10,647 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:10,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:10,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:10,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:10,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1356281473, now seen corresponding path program 1 times [2023-12-19 13:08:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:10,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788675471] [2023-12-19 13:08:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:10,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:10,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:10,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856944121] [2023-12-19 13:08:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:10,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:10,880 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:10,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 13:08:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:11,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 13:08:11,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3789 proven. 375 refuted. 0 times theorem prover too weak. 1996 trivial. 0 not checked. [2023-12-19 13:08:12,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:08:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 81 proven. 246 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2023-12-19 13:08:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788675471] [2023-12-19 13:08:14,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856944121] [2023-12-19 13:08:14,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856944121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:08:14,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:08:14,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-12-19 13:08:14,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113672822] [2023-12-19 13:08:14,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:08:14,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 13:08:14,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:14,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 13:08:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2023-12-19 13:08:14,163 INFO L87 Difference]: Start difference. First operand 2759 states and 4376 transitions. Second operand has 30 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 9 states have call successors, (109), 5 states have call predecessors, (109), 10 states have return successors, (110), 9 states have call predecessors, (110), 9 states have call successors, (110) [2023-12-19 13:08:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:16,848 INFO L93 Difference]: Finished difference Result 10751 states and 16501 transitions. [2023-12-19 13:08:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-19 13:08:16,849 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 9 states have call successors, (109), 5 states have call predecessors, (109), 10 states have return successors, (110), 9 states have call predecessors, (110), 9 states have call successors, (110) Word has length 365 [2023-12-19 13:08:16,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:16,874 INFO L225 Difference]: With dead ends: 10751 [2023-12-19 13:08:16,874 INFO L226 Difference]: Without dead ends: 8093 [2023-12-19 13:08:16,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=942, Invalid=3090, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 13:08:16,882 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 2843 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 3033 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 3033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:16,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 1942 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 3033 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 13:08:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8093 states. [2023-12-19 13:08:17,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8093 to 5849. [2023-12-19 13:08:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5849 states, 4702 states have (on average 1.4529987239472564) internal successors, (6832), 4745 states have internal predecessors, (6832), 984 states have call successors, (984), 162 states have call predecessors, (984), 162 states have return successors, (984), 941 states have call predecessors, (984), 984 states have call successors, (984) [2023-12-19 13:08:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 8800 transitions. [2023-12-19 13:08:17,175 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 8800 transitions. Word has length 365 [2023-12-19 13:08:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:17,175 INFO L495 AbstractCegarLoop]: Abstraction has 5849 states and 8800 transitions. [2023-12-19 13:08:17,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 9 states have call successors, (109), 5 states have call predecessors, (109), 10 states have return successors, (110), 9 states have call predecessors, (110), 9 states have call successors, (110) [2023-12-19 13:08:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 8800 transitions. [2023-12-19 13:08:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-19 13:08:17,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:17,180 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:17,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:17,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:17,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:17,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2094680321, now seen corresponding path program 1 times [2023-12-19 13:08:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866761470] [2023-12-19 13:08:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:17,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:17,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762102506] [2023-12-19 13:08:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:17,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:17,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:17,415 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:17,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 13:08:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:17,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 13:08:17,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2415 proven. 513 refuted. 0 times theorem prover too weak. 3232 trivial. 0 not checked. [2023-12-19 13:08:19,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:08:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 111 proven. 375 refuted. 0 times theorem prover too weak. 5674 trivial. 0 not checked. [2023-12-19 13:08:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866761470] [2023-12-19 13:08:20,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762102506] [2023-12-19 13:08:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762102506] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:08:20,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:08:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2023-12-19 13:08:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233755070] [2023-12-19 13:08:20,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:08:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 13:08:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:20,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 13:08:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 13:08:20,949 INFO L87 Difference]: Start difference. First operand 5849 states and 8800 transitions. Second operand has 34 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 8 states have call successors, (108), 5 states have call predecessors, (108), 11 states have return successors, (109), 8 states have call predecessors, (109), 8 states have call successors, (109) [2023-12-19 13:08:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:33,015 INFO L93 Difference]: Finished difference Result 38341 states and 56711 transitions. [2023-12-19 13:08:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-19 13:08:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 8 states have call successors, (108), 5 states have call predecessors, (108), 11 states have return successors, (109), 8 states have call predecessors, (109), 8 states have call successors, (109) Word has length 365 [2023-12-19 13:08:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:33,088 INFO L225 Difference]: With dead ends: 38341 [2023-12-19 13:08:33,088 INFO L226 Difference]: Without dead ends: 32613 [2023-12-19 13:08:33,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14652 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=7410, Invalid=28880, Unknown=0, NotChecked=0, Total=36290 [2023-12-19 13:08:33,111 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 3356 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 5257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:33,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3356 Valid, 3265 Invalid, 5257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [980 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 13:08:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32613 states. [2023-12-19 13:08:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32613 to 12407. [2023-12-19 13:08:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12407 states, 10141 states have (on average 1.4673109160832265) internal successors, (14880), 10208 states have internal predecessors, (14880), 1816 states have call successors, (1816), 449 states have call predecessors, (1816), 449 states have return successors, (1816), 1749 states have call predecessors, (1816), 1816 states have call successors, (1816) [2023-12-19 13:08:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12407 states to 12407 states and 18512 transitions. [2023-12-19 13:08:34,105 INFO L78 Accepts]: Start accepts. Automaton has 12407 states and 18512 transitions. Word has length 365 [2023-12-19 13:08:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:34,106 INFO L495 AbstractCegarLoop]: Abstraction has 12407 states and 18512 transitions. [2023-12-19 13:08:34,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 8 states have call successors, (108), 5 states have call predecessors, (108), 11 states have return successors, (109), 8 states have call predecessors, (109), 8 states have call successors, (109) [2023-12-19 13:08:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 12407 states and 18512 transitions. [2023-12-19 13:08:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-19 13:08:34,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:34,114 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:34,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 13:08:34,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 13:08:34,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:34,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1708302981, now seen corresponding path program 1 times [2023-12-19 13:08:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:34,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135564232] [2023-12-19 13:08:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:34,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:34,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702891521] [2023-12-19 13:08:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:34,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:34,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:34,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 13:08:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:34,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 13:08:34,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2424 proven. 492 refuted. 0 times theorem prover too weak. 3244 trivial. 0 not checked. [2023-12-19 13:08:36,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:08:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 132 proven. 510 refuted. 0 times theorem prover too weak. 5518 trivial. 0 not checked. [2023-12-19 13:08:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:37,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135564232] [2023-12-19 13:08:37,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:37,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702891521] [2023-12-19 13:08:37,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702891521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:08:37,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:08:37,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2023-12-19 13:08:37,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808853998] [2023-12-19 13:08:37,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:08:37,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 13:08:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:37,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 13:08:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 13:08:37,836 INFO L87 Difference]: Start difference. First operand 12407 states and 18512 transitions. Second operand has 33 states, 31 states have (on average 5.903225806451613) internal successors, (183), 29 states have internal predecessors, (183), 10 states have call successors, (104), 6 states have call predecessors, (104), 12 states have return successors, (104), 10 states have call predecessors, (104), 10 states have call successors, (104) [2023-12-19 13:08:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:45,245 INFO L93 Difference]: Finished difference Result 33061 states and 48482 transitions. [2023-12-19 13:08:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-19 13:08:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.903225806451613) internal successors, (183), 29 states have internal predecessors, (183), 10 states have call successors, (104), 6 states have call predecessors, (104), 12 states have return successors, (104), 10 states have call predecessors, (104), 10 states have call successors, (104) Word has length 365 [2023-12-19 13:08:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:45,282 INFO L225 Difference]: With dead ends: 33061 [2023-12-19 13:08:45,282 INFO L226 Difference]: Without dead ends: 20795 [2023-12-19 13:08:45,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6329 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4110, Invalid=13446, Unknown=0, NotChecked=0, Total=17556 [2023-12-19 13:08:45,302 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 2996 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:45,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2996 Valid, 1503 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 13:08:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20795 states. [2023-12-19 13:08:46,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20795 to 9359. [2023-12-19 13:08:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9359 states, 7124 states have (on average 1.3637001684446939) internal successors, (9715), 7161 states have internal predecessors, (9715), 1752 states have call successors, (1752), 482 states have call predecessors, (1752), 482 states have return successors, (1752), 1715 states have call predecessors, (1752), 1752 states have call successors, (1752) [2023-12-19 13:08:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9359 states to 9359 states and 13219 transitions. [2023-12-19 13:08:46,370 INFO L78 Accepts]: Start accepts. Automaton has 9359 states and 13219 transitions. Word has length 365 [2023-12-19 13:08:46,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:46,371 INFO L495 AbstractCegarLoop]: Abstraction has 9359 states and 13219 transitions. [2023-12-19 13:08:46,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.903225806451613) internal successors, (183), 29 states have internal predecessors, (183), 10 states have call successors, (104), 6 states have call predecessors, (104), 12 states have return successors, (104), 10 states have call predecessors, (104), 10 states have call successors, (104) [2023-12-19 13:08:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 9359 states and 13219 transitions. [2023-12-19 13:08:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-19 13:08:46,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:46,376 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:46,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:46,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:46,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:46,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:46,584 INFO L85 PathProgramCache]: Analyzing trace with hash -267230934, now seen corresponding path program 1 times [2023-12-19 13:08:46,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:46,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367732242] [2023-12-19 13:08:46,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:46,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:46,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:46,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118835804] [2023-12-19 13:08:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:46,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:46,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:46,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:46,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 13:08:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:46,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:08:46,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 1536 proven. 0 refuted. 0 times theorem prover too weak. 4624 trivial. 0 not checked. [2023-12-19 13:08:47,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:08:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367732242] [2023-12-19 13:08:47,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:47,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118835804] [2023-12-19 13:08:47,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118835804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:08:47,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:08:47,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:08:47,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137202931] [2023-12-19 13:08:47,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:08:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:08:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:08:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:08:47,419 INFO L87 Difference]: Start difference. First operand 9359 states and 13219 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-19 13:08:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:49,648 INFO L93 Difference]: Finished difference Result 29379 states and 41623 transitions. [2023-12-19 13:08:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:08:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 366 [2023-12-19 13:08:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:49,683 INFO L225 Difference]: With dead ends: 29379 [2023-12-19 13:08:49,683 INFO L226 Difference]: Without dead ends: 20165 [2023-12-19 13:08:49,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:08:49,696 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 516 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:49,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1133 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 13:08:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20165 states. [2023-12-19 13:08:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20165 to 20161. [2023-12-19 13:08:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20161 states, 15490 states have (on average 1.3699806326662363) internal successors, (21221), 15569 states have internal predecessors, (21221), 3660 states have call successors, (3660), 1010 states have call predecessors, (3660), 1010 states have return successors, (3660), 3581 states have call predecessors, (3660), 3660 states have call successors, (3660) [2023-12-19 13:08:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20161 states to 20161 states and 28541 transitions. [2023-12-19 13:08:51,759 INFO L78 Accepts]: Start accepts. Automaton has 20161 states and 28541 transitions. Word has length 366 [2023-12-19 13:08:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:51,760 INFO L495 AbstractCegarLoop]: Abstraction has 20161 states and 28541 transitions. [2023-12-19 13:08:51,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-19 13:08:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 20161 states and 28541 transitions. [2023-12-19 13:08:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-19 13:08:51,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:51,764 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:08:51,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 13:08:51,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:51,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:51,971 INFO L85 PathProgramCache]: Analyzing trace with hash -9065496, now seen corresponding path program 1 times [2023-12-19 13:08:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:51,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841245347] [2023-12-19 13:08:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:51,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:51,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596133596] [2023-12-19 13:08:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:51,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:51,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:51,999 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:52,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 13:08:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:52,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-19 13:08:52,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 4835 proven. 474 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2023-12-19 13:08:59,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:09:30,628 WARN L293 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:09:49,373 WARN L293 SmtUtils]: Spent 7.30s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:10:13,303 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 15 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:10:47,562 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:11:46,846 WARN L293 SmtUtils]: Spent 17.37s on a formula simplification that was a NOOP. DAG size: 187 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 13:11:46,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:11:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841245347] [2023-12-19 13:11:46,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:11:46,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596133596] [2023-12-19 13:11:46,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596133596] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 13:11:46,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:11:46,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2023-12-19 13:11:46,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495052788] [2023-12-19 13:11:46,850 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 13:11:46,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 13:11:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:11:46,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 13:11:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1365, Unknown=9, NotChecked=0, Total=1640 [2023-12-19 13:11:46,851 INFO L87 Difference]: Start difference. First operand 20161 states and 28541 transitions. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 26 states have internal predecessors, (125), 8 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (56), 8 states have call predecessors, (56), 8 states have call successors, (56) [2023-12-19 13:12:30,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:13:13,244 WARN L293 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 91 DAG size of output: 89 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 13:13:16,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 13:13:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:13:21,764 INFO L93 Difference]: Finished difference Result 53159 states and 74604 transitions. [2023-12-19 13:13:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-19 13:13:21,765 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 26 states have internal predecessors, (125), 8 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (56), 8 states have call predecessors, (56), 8 states have call successors, (56) Word has length 366 [2023-12-19 13:13:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:13:21,820 INFO L225 Difference]: With dead ends: 53159 [2023-12-19 13:13:21,820 INFO L226 Difference]: Without dead ends: 33143 [2023-12-19 13:13:21,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 139.0s TimeCoverageRelationStatistics Valid=849, Invalid=3031, Unknown=26, NotChecked=0, Total=3906 [2023-12-19 13:13:21,849 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1697 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 3706 mSolverCounterSat, 105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3706 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:13:21,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 2544 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3706 Invalid, 1 Unknown, 0 Unchecked, 13.3s Time] [2023-12-19 13:13:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33143 states. [2023-12-19 13:13:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33143 to 24467. [2023-12-19 13:13:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24467 states, 19582 states have (on average 1.3906648963333674) internal successors, (27232), 19661 states have internal predecessors, (27232), 3649 states have call successors, (3649), 1235 states have call predecessors, (3649), 1235 states have return successors, (3649), 3570 states have call predecessors, (3649), 3649 states have call successors, (3649) [2023-12-19 13:13:24,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24467 states to 24467 states and 34530 transitions. [2023-12-19 13:13:24,461 INFO L78 Accepts]: Start accepts. Automaton has 24467 states and 34530 transitions. Word has length 366 [2023-12-19 13:13:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:13:24,461 INFO L495 AbstractCegarLoop]: Abstraction has 24467 states and 34530 transitions. [2023-12-19 13:13:24,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 26 states have internal predecessors, (125), 8 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (56), 8 states have call predecessors, (56), 8 states have call successors, (56) [2023-12-19 13:13:24,462 INFO L276 IsEmpty]: Start isEmpty. Operand 24467 states and 34530 transitions. [2023-12-19 13:13:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-19 13:13:24,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:13:24,467 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:13:24,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 13:13:24,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 13:13:24,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:13:24,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:13:24,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1919207206, now seen corresponding path program 1 times [2023-12-19 13:13:24,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:13:24,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715440276] [2023-12-19 13:13:24,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:13:24,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:13:24,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:13:24,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717254643] [2023-12-19 13:13:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:13:24,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:13:24,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:13:24,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:13:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 13:13:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:13:25,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-19 13:13:25,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:13:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3542 proven. 795 refuted. 0 times theorem prover too weak. 1823 trivial. 0 not checked. [2023-12-19 13:13:30,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:13:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:13:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715440276] [2023-12-19 13:13:38,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:13:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717254643] [2023-12-19 13:13:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717254643] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 13:13:38,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:13:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-12-19 13:13:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297442223] [2023-12-19 13:13:38,079 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 13:13:38,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 13:13:38,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:13:38,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 13:13:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 13:13:38,080 INFO L87 Difference]: Start difference. First operand 24467 states and 34530 transitions. Second operand has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 23 states have internal predecessors, (119), 9 states have call successors, (56), 9 states have call predecessors, (56), 11 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) [2023-12-19 13:14:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:14:03,830 INFO L93 Difference]: Finished difference Result 64298 states and 88973 transitions. [2023-12-19 13:14:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-19 13:14:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 23 states have internal predecessors, (119), 9 states have call successors, (56), 9 states have call predecessors, (56), 11 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) Word has length 366 [2023-12-19 13:14:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:14:03,932 INFO L225 Difference]: With dead ends: 64298 [2023-12-19 13:14:03,932 INFO L226 Difference]: Without dead ends: 39964 [2023-12-19 13:14:03,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=1897, Invalid=6293, Unknown=0, NotChecked=0, Total=8190 [2023-12-19 13:14:03,958 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 952 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:14:03,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 2178 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-12-19 13:14:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39964 states. [2023-12-19 13:14:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39964 to 27091. [2023-12-19 13:14:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27091 states, 22148 states have (on average 1.3958822467039913) internal successors, (30916), 22226 states have internal predecessors, (30916), 3544 states have call successors, (3544), 1398 states have call predecessors, (3544), 1398 states have return successors, (3544), 3466 states have call predecessors, (3544), 3544 states have call successors, (3544) [2023-12-19 13:14:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27091 states to 27091 states and 38004 transitions. [2023-12-19 13:14:08,284 INFO L78 Accepts]: Start accepts. Automaton has 27091 states and 38004 transitions. Word has length 366 [2023-12-19 13:14:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:14:08,284 INFO L495 AbstractCegarLoop]: Abstraction has 27091 states and 38004 transitions. [2023-12-19 13:14:08,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 23 states have internal predecessors, (119), 9 states have call successors, (56), 9 states have call predecessors, (56), 11 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) [2023-12-19 13:14:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 27091 states and 38004 transitions. [2023-12-19 13:14:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-19 13:14:08,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:14:08,290 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:14:08,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 13:14:08,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 13:14:08,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:14:08,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:14:08,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1169951494, now seen corresponding path program 1 times [2023-12-19 13:14:08,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:14:08,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481627424] [2023-12-19 13:14:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:14:08,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:14:08,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168095901] [2023-12-19 13:14:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:08,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:14:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:14:08,545 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:14:08,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 13:14:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:14:08,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:14:08,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:14:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:14:08,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:14:08,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:14:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481627424] [2023-12-19 13:14:08,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:14:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168095901] [2023-12-19 13:14:08,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168095901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:14:08,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:14:08,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:14:08,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586111464] [2023-12-19 13:14:08,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:14:08,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:14:08,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:14:08,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:14:08,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:14:08,844 INFO L87 Difference]: Start difference. First operand 27091 states and 38004 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:14:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:14:11,827 INFO L93 Difference]: Finished difference Result 36073 states and 50882 transitions. [2023-12-19 13:14:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:14:11,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 366 [2023-12-19 13:14:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:14:11,853 INFO L225 Difference]: With dead ends: 36073 [2023-12-19 13:14:11,853 INFO L226 Difference]: Without dead ends: 18038 [2023-12-19 13:14:11,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:14:11,873 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 266 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:14:11,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 779 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:14:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18038 states. [2023-12-19 13:14:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18038 to 17148. [2023-12-19 13:14:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17148 states, 13945 states have (on average 1.3820007171029043) internal successors, (19272), 13995 states have internal predecessors, (19272), 2296 states have call successors, (2296), 906 states have call predecessors, (2296), 906 states have return successors, (2296), 2246 states have call predecessors, (2296), 2296 states have call successors, (2296) [2023-12-19 13:14:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17148 states to 17148 states and 23864 transitions. [2023-12-19 13:14:14,629 INFO L78 Accepts]: Start accepts. Automaton has 17148 states and 23864 transitions. Word has length 366 [2023-12-19 13:14:14,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:14:14,629 INFO L495 AbstractCegarLoop]: Abstraction has 17148 states and 23864 transitions. [2023-12-19 13:14:14,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:14:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 17148 states and 23864 transitions. [2023-12-19 13:14:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-19 13:14:14,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:14:14,635 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:14:14,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 13:14:14,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 13:14:14,843 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:14:14,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:14:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1130871096, now seen corresponding path program 1 times [2023-12-19 13:14:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:14:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517973080] [2023-12-19 13:14:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:14,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:14:14,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:14:14,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002365596] [2023-12-19 13:14:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:14,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:14:14,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:14:14,900 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:14:14,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 13:14:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:14:15,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:14:15,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:14:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2535 proven. 45 refuted. 0 times theorem prover too weak. 3580 trivial. 0 not checked. [2023-12-19 13:14:15,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:14:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 120 proven. 45 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-12-19 13:14:15,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:14:15,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517973080] [2023-12-19 13:14:15,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:14:15,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002365596] [2023-12-19 13:14:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002365596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:14:15,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:14:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:14:15,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878665305] [2023-12-19 13:14:15,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:14:15,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:14:15,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:14:15,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:14:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:14:15,510 INFO L87 Difference]: Start difference. First operand 17148 states and 23864 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-19 13:14:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:14:16,848 INFO L93 Difference]: Finished difference Result 23468 states and 32481 transitions. [2023-12-19 13:14:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 13:14:16,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 366 [2023-12-19 13:14:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:14:16,857 INFO L225 Difference]: With dead ends: 23468 [2023-12-19 13:14:16,857 INFO L226 Difference]: Without dead ends: 6321 [2023-12-19 13:14:16,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 724 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:14:16,874 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 207 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:14:16,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 559 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:14:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2023-12-19 13:14:17,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 2080. [2023-12-19 13:14:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1733 states have (on average 1.3993075591459896) internal successors, (2425), 1735 states have internal predecessors, (2425), 244 states have call successors, (244), 102 states have call predecessors, (244), 102 states have return successors, (244), 242 states have call predecessors, (244), 244 states have call successors, (244) [2023-12-19 13:14:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2913 transitions. [2023-12-19 13:14:17,510 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2913 transitions. Word has length 366 [2023-12-19 13:14:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:14:17,511 INFO L495 AbstractCegarLoop]: Abstraction has 2080 states and 2913 transitions. [2023-12-19 13:14:17,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-19 13:14:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2913 transitions. [2023-12-19 13:14:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-19 13:14:17,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:14:17,521 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:14:17,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 13:14:17,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:14:17,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:14:17,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:14:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -656624396, now seen corresponding path program 1 times [2023-12-19 13:14:17,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:14:17,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124980101] [2023-12-19 13:14:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:17,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:14:17,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:14:17,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379866273] [2023-12-19 13:14:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:17,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:14:17,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:14:17,816 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:14:17,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 13:14:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:14:18,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 13:14:18,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:14:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-12-19 13:14:18,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:14:18,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:14:18,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124980101] [2023-12-19 13:14:18,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:14:18,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379866273] [2023-12-19 13:14:18,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379866273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:14:18,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:14:18,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:14:18,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703474430] [2023-12-19 13:14:18,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:14:18,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:14:18,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:14:18,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:14:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:14:18,343 INFO L87 Difference]: Start difference. First operand 2080 states and 2913 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:14:19,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:14:19,278 INFO L93 Difference]: Finished difference Result 4497 states and 6233 transitions. [2023-12-19 13:14:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 13:14:19,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 367 [2023-12-19 13:14:19,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:14:19,281 INFO L225 Difference]: With dead ends: 4497 [2023-12-19 13:14:19,281 INFO L226 Difference]: Without dead ends: 2418 [2023-12-19 13:14:19,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-19 13:14:19,285 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 511 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:14:19,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 482 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:14:19,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2023-12-19 13:14:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2080. [2023-12-19 13:14:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1733 states have (on average 1.396999422965955) internal successors, (2421), 1735 states have internal predecessors, (2421), 244 states have call successors, (244), 102 states have call predecessors, (244), 102 states have return successors, (244), 242 states have call predecessors, (244), 244 states have call successors, (244) [2023-12-19 13:14:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2909 transitions. [2023-12-19 13:14:19,737 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2909 transitions. Word has length 367 [2023-12-19 13:14:19,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:14:19,737 INFO L495 AbstractCegarLoop]: Abstraction has 2080 states and 2909 transitions. [2023-12-19 13:14:19,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-19 13:14:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2909 transitions. [2023-12-19 13:14:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-19 13:14:19,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:14:19,740 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:14:19,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 13:14:19,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 13:14:19,947 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:14:19,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:14:19,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1282537650, now seen corresponding path program 1 times [2023-12-19 13:14:19,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:14:19,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152186637] [2023-12-19 13:14:19,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:19,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:14:19,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:14:19,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797640808] [2023-12-19 13:14:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:19,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:14:19,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:14:19,975 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:14:20,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 13:14:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:14:20,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 13:14:20,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:14:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 483 proven. 159 refuted. 0 times theorem prover too weak. 5518 trivial. 0 not checked. [2023-12-19 13:14:20,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:14:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-12-19 13:14:21,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:14:21,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152186637] [2023-12-19 13:14:21,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:14:21,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797640808] [2023-12-19 13:14:21,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797640808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:14:21,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:14:21,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-19 13:14:21,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739668196] [2023-12-19 13:14:21,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:14:21,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 13:14:21,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:14:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 13:14:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 13:14:21,450 INFO L87 Difference]: Start difference. First operand 2080 states and 2909 transitions. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-12-19 13:14:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:14:23,135 INFO L93 Difference]: Finished difference Result 5546 states and 7602 transitions. [2023-12-19 13:14:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 13:14:23,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) Word has length 367 [2023-12-19 13:14:23,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:14:23,140 INFO L225 Difference]: With dead ends: 5546 [2023-12-19 13:14:23,140 INFO L226 Difference]: Without dead ends: 3467 [2023-12-19 13:14:23,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2023-12-19 13:14:23,143 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 963 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:14:23,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 663 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 13:14:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2023-12-19 13:14:23,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 1167. [2023-12-19 13:14:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 978 states have (on average 1.3803680981595092) internal successors, (1350), 980 states have internal predecessors, (1350), 132 states have call successors, (132), 56 states have call predecessors, (132), 56 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-19 13:14:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1614 transitions. [2023-12-19 13:14:23,432 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1614 transitions. Word has length 367 [2023-12-19 13:14:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:14:23,433 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1614 transitions. [2023-12-19 13:14:23,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-12-19 13:14:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1614 transitions. [2023-12-19 13:14:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-19 13:14:23,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:14:23,435 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:14:23,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 13:14:23,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 13:14:23,642 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:14:23,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:14:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash 888170864, now seen corresponding path program 1 times [2023-12-19 13:14:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:14:23,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83103552] [2023-12-19 13:14:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:23,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:14:23,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:14:23,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337426521] [2023-12-19 13:14:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:23,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:14:23,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:14:23,704 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:14:23,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 13:14:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:14:23,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 13:14:23,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:14:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 1729 proven. 138 refuted. 0 times theorem prover too weak. 4293 trivial. 0 not checked. [2023-12-19 13:14:24,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:14:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 27 proven. 138 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-12-19 13:14:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:14:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83103552] [2023-12-19 13:14:25,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:14:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337426521] [2023-12-19 13:14:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337426521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:14:25,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:14:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2023-12-19 13:14:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241373155] [2023-12-19 13:14:25,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:14:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 13:14:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:14:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 13:14:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:14:25,142 INFO L87 Difference]: Start difference. First operand 1167 states and 1614 transitions. Second operand has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-12-19 13:14:26,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:14:26,722 INFO L93 Difference]: Finished difference Result 3222 states and 4474 transitions. [2023-12-19 13:14:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 13:14:26,723 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) Word has length 367 [2023-12-19 13:14:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:14:26,725 INFO L225 Difference]: With dead ends: 3222 [2023-12-19 13:14:26,726 INFO L226 Difference]: Without dead ends: 2056 [2023-12-19 13:14:26,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2023-12-19 13:14:26,727 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 538 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:14:26,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1247 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 13:14:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-12-19 13:14:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1598. [2023-12-19 13:14:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1330 states have (on average 1.369924812030075) internal successors, (1822), 1332 states have internal predecessors, (1822), 188 states have call successors, (188), 79 states have call predecessors, (188), 79 states have return successors, (188), 186 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-19 13:14:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2198 transitions. [2023-12-19 13:14:27,140 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2198 transitions. Word has length 367 [2023-12-19 13:14:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:14:27,141 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2198 transitions. [2023-12-19 13:14:27,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-12-19 13:14:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2198 transitions. [2023-12-19 13:14:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-19 13:14:27,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:14:27,142 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:14:27,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 13:14:27,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 13:14:27,350 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:14:27,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:14:27,350 INFO L85 PathProgramCache]: Analyzing trace with hash 193666643, now seen corresponding path program 1 times [2023-12-19 13:14:27,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:14:27,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903194301] [2023-12-19 13:14:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:14:27,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:14:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270774314] [2023-12-19 13:14:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:14:27,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:14:27,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:14:27,375 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:14:27,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 13:14:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:14:33,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 13:14:33,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:14:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 4385 proven. 306 refuted. 0 times theorem prover too weak. 1469 trivial. 0 not checked. [2023-12-19 13:14:35,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:15:13,087 WARN L293 SmtUtils]: Spent 6.68s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:15:27,396 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:15:35,428 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:16:33,049 WARN L293 SmtUtils]: Spent 31.26s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 13:16:54,427 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:17:37,019 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:17:47,140 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:19:01,192 WARN L293 SmtUtils]: Spent 38.97s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 13:19:09,958 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:19:35,840 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:19:43,871 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:19:51,910 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 13:20:04,095 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse7 (* c_~var_1_33~0 4294967295)) (.cse4 (mod c_~var_1_31~0 4294967296))) (let ((.cse8 (* c_~var_1_31~0 4294967295)) (.cse6 (* (- 1) .cse4)) (.cse0 (mod .cse7 4294967296)) (.cse9 (mod (+ .cse7 c_~var_1_50~0) 4294967296))) (let ((.cse10 (+ .cse9 1)) (.cse11 (mod c_~var_1_50~0 4294967296)) (.cse5 (* (div (+ .cse6 c_~var_1_14~0 .cse0) 4294967296) 4294967296)) (.cse2 (mod (+ .cse7 255 .cse8) 4294967296))) (or (let ((.cse3 (mod (+ .cse7 .cse8 c_~var_1_14~0) 4294967296)) (.cse1 (* (div (+ .cse6 255 .cse0) 4294967296) 4294967296))) (and (<= (+ .cse0 1) (+ .cse1 (* (div (+ (- 1) .cse2) 4294967296) 4294967296) .cse3 .cse4)) (<= 2 (+ .cse5 (* (div (+ (- 1) .cse2 (* (- 1) .cse0) .cse4) 4294967296) 4294967296) .cse3)) (<= 1 .cse2) (<= .cse0 (+ .cse1 .cse4 2147483648)))) (< (+ (* (div (+ .cse6 255 .cse9) 4294967296) 4294967296) .cse4) .cse10) (< (+ (* (div (+ .cse6 c_~var_1_14~0 .cse9) 4294967296) 4294967296) .cse4) .cse10) (< 4294967294 .cse11) (not (= |c_assume_abort_if_not_#in~cond| 1)) (< .cse11 2147483647) (< (+ .cse0 4294967296) (+ .cse5 .cse2 .cse4)))))) is different from true [2023-12-19 13:21:10,433 WARN L293 SmtUtils]: Spent 6.76s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-19 13:22:27,706 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:22:27,706 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:22:28,684 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 13:22:28,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-19 13:22:28,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 13:22:28,889 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 368 with TraceHistMax 56,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-1 term,while PolyPacSimplificationTermWalker was simplifying 7 xjuncts wrt. a ∧-8-1 context. [2023-12-19 13:22:28,893 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:22:28,894 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 13:22:28,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:22:28 BoogieIcfgContainer [2023-12-19 13:22:28,896 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 13:22:28,896 INFO L158 Benchmark]: Toolchain (without parser) took 865968.97ms. Allocated memory was 208.7MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 166.9MB in the beginning and 833.1MB in the end (delta: -666.2MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-19 13:22:28,896 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 161.5MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 13:22:28,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.73ms. Allocated memory is still 208.7MB. Free memory was 166.9MB in the beginning and 141.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-19 13:22:28,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.13ms. Allocated memory is still 208.7MB. Free memory was 141.1MB in the beginning and 127.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 13:22:28,897 INFO L158 Benchmark]: Boogie Preprocessor took 159.74ms. Allocated memory is still 208.7MB. Free memory was 127.1MB in the beginning and 160.3MB in the end (delta: -33.2MB). Peak memory consumption was 21.1MB. Max. memory is 8.0GB. [2023-12-19 13:22:28,897 INFO L158 Benchmark]: RCFGBuilder took 866.06ms. Allocated memory is still 208.7MB. Free memory was 160.3MB in the beginning and 165.8MB in the end (delta: -5.5MB). Peak memory consumption was 73.3MB. Max. memory is 8.0GB. [2023-12-19 13:22:28,897 INFO L158 Benchmark]: TraceAbstraction took 864502.28ms. Allocated memory was 208.7MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 165.2MB in the beginning and 833.1MB in the end (delta: -667.9MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-19 13:22:28,898 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-19 13:22:28,907 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 161.5MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 363.73ms. Allocated memory is still 208.7MB. Free memory was 166.9MB in the beginning and 141.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 73.13ms. Allocated memory is still 208.7MB. Free memory was 141.1MB in the beginning and 127.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 159.74ms. Allocated memory is still 208.7MB. Free memory was 127.1MB in the beginning and 160.3MB in the end (delta: -33.2MB). Peak memory consumption was 21.1MB. Max. memory is 8.0GB. * RCFGBuilder took 866.06ms. Allocated memory is still 208.7MB. Free memory was 160.3MB in the beginning and 165.8MB in the end (delta: -5.5MB). Peak memory consumption was 73.3MB. Max. memory is 8.0GB. * TraceAbstraction took 864502.28ms. Allocated memory was 208.7MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 165.2MB in the beginning and 833.1MB in the end (delta: -667.9MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 368 with TraceHistMax 56,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-1 term,while PolyPacSimplificationTermWalker was simplifying 7 xjuncts wrt. a ∧-8-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 188 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 864.5s, OverallIterations: 18, TraceHistogramMax: 56, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 155.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 17742 SdHoareTripleChecker+Valid, 37.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17575 mSDsluCounter, 20483 SdHoareTripleChecker+Invalid, 35.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14759 mSDsCounter, 4121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19227 IncrementalHoareTripleChecker+Invalid, 23349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4121 mSolverCounterUnsat, 5724 mSDtfsCounter, 19227 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9406 GetRequests, 8798 SyntacticMatches, 2 SemanticMatches, 606 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25068 ImplicationChecksByTransitivity, 165.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27091occurred in iteration=12, InterpolantAutomatonStates: 491, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.4s AutomataMinimizationTime, 17 MinimizatonAttempts, 63827 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 200.8s InterpolantComputationTime, 6560 NumberOfCodeBlocks, 6560 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8732 ConstructedInterpolants, 28 QuantifiedInterpolants, 61241 SizeOfPredicates, 95 NumberOfNonLiveVariables, 14280 ConjunctsInSsa, 262 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 143340/147840 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown